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Lake Pontchartrain
| Lake Pontchartrain | |
|---|---|
 Landsat image | |
 Map | |
| Coordinates | 30°12′22″N 90°06′08″W / 30.206055°N 90.102132°W |
| Type | salt-water lake |
| Basin countries | United States |
| Surface area | 630 sq mi (1630 km²) |
| Settlements | New Orleans, Metairie, Kenner, Mandeville, Slidell, Madisonville, etc. |
Lake Pontchartrain (pronounced /ˈpɒntʃətreɪn/ in English; Lac Pontchartrain, IPA [lak pɔ̃ʃaʀtʀɛ̃] in French) is a brackish lake in southeastern Louisiana. It is the second largest salt-water lake in the United States, after the Great Salt Lake in Utah, and the largest lake in Louisiana.
It has an area of 630 square miles (1630 square km) with an average depth of 12 to 14 feet (about 4 meters). Some shipping channels are kept deeper through dredging. It is roughly oval in shape, about 40 miles (64 km) wide and 24 miles (39 km) from south to north.
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